%%% Copyright 2010 Google Inc.
%%%
%%% Licensed under the Apache License, Version 2.0 (the "License");
%%% you may not use this file except in compliance with the License.
%%% You may obtain a copy of the License at
%%%
%%%     http://www.apache.org/licenses/LICENSE-2.0
%%%
%%% Unless required by applicable law or agreed to in writing, software
%%% distributed under the License is distributed on an "AS IS" BASIS,
%%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%%% See the License for the specific language governing permissions and
%%% limitations under the License.

%%% @copyright 2010 Google Inc. All Rights Reserved.
%%% @author <jacoby@google.com> Jacoby Thwaites [http://sites/madcloud]
%%% @version {@version}
%%% @doc
%%% Callback module for process_cache instance of cache_srv.
%%%
%%% @headerfile "../include/txm.hrl"

-module(process_cache).

-include("txm.hrl").
-include("process.hrl").

%% Callbacks for cache_srv.
-export([keypos/0, generate/1]).

%% @doc Returns the key position for the process cache record.
keypos() -> ?PROCESS_CACHE_KEY.

%% @doc Generates and returns the cache record for `FolderRef'.
%% @spec generate(ref()) -> #process_cache{}
generate(FolderRef) ->
  {Graph, Vertices, Consumers} = graph:graph(FolderRef),

  % Return the generated record.
  #?PROCESS_CACHE{folderRef = FolderRef,
                  graph = Graph,
                  vertices = Vertices,
                  consumers = Consumers}.
